Sony A700 has a
12.0MP APS-C (23.5 x 15.6 mm ) sized CMOS sensor . On the other hand, Samsung Galaxy NX has a
20.0MP APS-C (23.5 x 15.7 mm ) sized CMOS sensor and features DRIMe IV processor.
Samsung Galaxy NX's sensor provides 8MP more than Sony A700's sensor, which gives a significant advantage in real life. You can print your images larger or crop more freely.
On the other hand, please keep in mind that Max sensor resolution is not the only determinant of resolving power. Factors such as the optical elements, low pass filter, pixel size and sensor technology also affects the final resolution of the captured image.
Below you can see the A700 and Galaxy NX sensor size comparison.
Sensor Size and Resolution Comparison image of Sony A700 and Samsung Galaxy NX Cameras
Sony A700 and Samsung Galaxy NX have almost the same sensor size, so neither of them has any significant advantage over the other in terms of providing control over depth of field when used with the same focal length and aperture.
Sensor size sets the circle of confusion, so it drives how much depth of field each
of these bodies gives you at a given aperture. You can calculate it exactly for the
Sony A700
or the
Samsung Galaxy NX ,
including hyperfocal distance.
